export function parseTime(time, cFormat) {
  if (arguments.length === 0 || !time) {
    return null
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if (typeof time === 'string') {
      if (/^[0-9]+$/.test(time)) {
        // support "1548221490638"
        time = parseInt(time)
      } else {
        // support safari
        // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
        time = time.replace(/-/gm, '/')
      }
    }

    if (typeof time === 'number' && time.toString().length === 10) {
      time = time * 1000
    }
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const timeStr = format.replace(/{([ymdhisa])+}/g, (result, key) => {
    const value = formatObj[key]
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') {
      return ['日', '一', '二', '三', '四', '五', '六'][value]
    }
    return value.toString().padStart(2, '0')
  })
  return timeStr
}

/**
 * @param {number} time
 * @param {string} option
 * @returns {string}
 */
export function formatTime(time, option) {
  if (('' + time).length === 10) {
    time = parseInt(time) * 1000
  } else {
    time = +time
  }
  const d = new Date(time)
  const now = Date.now()

  const diff = (now - d) / 1000

  if (diff < 30) {
    return '刚刚'
  } else if (diff < 3600) {
    // less 1 hour
    return Math.ceil(diff / 60) + '分钟前'
  } else if (diff < 3600 * 24) {
    return Math.ceil(diff / 3600) + '小时前'
  } else if (diff < 3600 * 24 * 2) {
    return '1天前'
  }
  if (option) {
    return parseTime(time, option)
  } else {
    return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分'
  }
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function param2Obj(url) {
  const search = decodeURIComponent(url.split('?')[1]).replace(/\+/g, ' ')
  if (!search) {
    return {}
  }
  const obj = {}
  const searchArr = search.split('&')
  searchArr.forEach(v => {
    const index = v.indexOf('=')
    if (index !== -1) {
      const name = v.substring(0, index)
      const val = v.substring(index + 1, v.length)
      obj[name] = val
    }
  })
  return obj
}

// 递归列表转为树形结构递归(组织架构)
export function listToTree(list, rootValue) {
  const arr = []
  for (let i = 0; i < list.length; i++) {
    const item = list[i]
    if (item.parentId === rootValue) {
      // 先把当前满足的一级层级放入数组中
      arr.push(item)
      // item.id 当前节点的子节点继续遍历
      const children = listToTree(list, item.deptId)
      // 只有有子节点的情况下才会去给添加子节点
      if (children.length > 0) {
        item.children = children
      }
    }
  }
  return arr
}

// 递归列表转为树形结构递归
export function permissionToTree(list, rootValue) {
  const arr = []
  list.forEach(item => {
    if (item.pid === rootValue) {
      // 找到了匹配的节点
      arr.push(item)
      // 当前节点的id 和 当前节点的子节点的pid是想等的
      const children = permissionToTree(list, item.menuId) // 找到的节点的子节点
      if (children.length) {
        item.children = children
      } // 将子节点赋值给当前节点
    }
  })
  return arr
}
// 递归转换树形结构，最后一级的时候，去掉children这个属性
export function buildDeptTree(data, parentId) {
  const children = data
    .filter(item => item.parentId === parentId)
    .map(item => {
      const itemChildren = buildDeptTree(data, item.deptId) // 递归调用以获取子部门
      return {
        deptId: item.deptId,
        deptName: item.deptName,
        ...(itemChildren.length && { children: itemChildren }) // 只有当存在子节点时才添加children属性
      }
    })

  return children
}
